Validation with pre-filled returns for Hungary

Validation with pre-filled returns compares your VAT Filing return against a pre-filled declaration from the National Tax and Customs Administration (NAV), which is Hungary's tax authority. This lets you catch mismatches before you file. Sovi AI extracts the box numbers and values from the NAV PDF. You can then review and confirm the data before the comparison runs.

Prerequisites

Before you start validation:

Generate your return. Validation with pre-filled returns becomes available only after the return exists.
Download the draft declaration PDF from the NAV portal. You'll upload this file for comparison.
Confirm your file is a PDF issued directly by the tax authority. VAT Filing accepts only tax authority PDFs.

How to use

To use validation with pre-filled returns:

Open your Hungary VAT return and click Upload return form under Validation with prefilled returns.
Upload the NAV draft declaration PDF.
Wait while Sovi AI extracts the box numbers and values from the PDF.
Review the extracted data. Double-click any value that doesn't look correct to edit it, or click Add new if a row is missing.
Click Confirm to run the comparison.
Check the result status on the Return overview page.

Understanding the comparison report

After you confirm, VAT Filing generates a downloadable Excel report comparing your return against the NAV pre-filled return.


Column	What it shows
VF Box Number / Tax Authority Box Number	The box as labeled in VAT Filing and in the NAV return.
VF Box Description	The description of the box from VAT Filing.
VF Taxable Amount / VF VAT Amount	The values from your VAT Filing return.
Tax Authority Taxable Amount / Tax Authority VAT Amount	The values from the NAV pre-filled return.
Difference Tax Amount / Difference VAT Amount	Your VAT Filing value minus the NAV value, for each box.

The report ends with a summary: Total boxes compared, matched boxes, boxes with differences, and the total net difference for both tax and VAT amounts.

Note:

Boxes that don't have a matching entry on both sides aren't included in the automatic comparison. Review unmapped boxes manually.

Result status

VAT Filing shows one of two results on the Return overview page after a comparison run:

Success: "All validated with prefilled returns" appears with a green checkmark and a timestamp.
Error: "Error found in return form and downloaded" appears with a warning icon and a timestamp. This means at least one box didn't match between your return and the NAV pre-filled return.

Known limitations

This feature supports only the HU VAT Return - Periodic - HU100 form at the moment.

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